CVE-2026-90703: d-link dwr-m921 Command Injection

Vulnerability summary

CVE-2026-90703 is a critical (CVSS 9.4) Command Injection vulnerability in d-link dwr-m921. EPSS estimates a 3.60% chance of exploitation in the next 30 days, higher than 89.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 14-09-2026
   PublishedVulnerability first disclosed.
2. 15-09-2026
   Last modifiedVulnerability information updated.

Description

A vulnerability has been found in D-Link DWR-M921 1.1.52. The affected element is the function system of the file /boafrm/formDiskCreateShare. Such manipulation of the argument folderpath leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.